Primer for internal-combustion engines.



J; & B. BOWMAN. PRIMER FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED DEC. 20, 1913- Patented Mar. 9, 1915.

JOHN AND BENJAMIN BOWMAN, 0F TORONTO, ONTARIQ, CANADA.

1 ,PRIMER FOB INTERNAL-COMBUSTI-ON ENGINES.

'L130J705. I

Specification of Letters Patent.

Patented Mar. 9, 19 15 Application filed December 20, 1913. Serial No. 807,901.

To all whom it may concern:

' Be it known that we, Jenn Bowman and BENJAMIN BOWMAN, subjects oftlie King of Great Britain, and residents of the city of Toronto, county of York, Province of Ontario, in the Dominion of Canada, have invented certain new and useful Improveeffective priming device which may be readily attached to any form of engine and which will insure an explosive mixture reaching the cylinders.

A further and important object is to effect a saving of fuel in the operation of the engine.

The principal feature of the invention consists in the novel construction and ar-. -rangement of a priming device, whereby a supply of fuel spirit is introduced directly into the valve chamber and a How of air directed through the channel through which said spirit is introduced, and whereby the.

air flow through said channelis controlled.

In the drawings, Figure 1 is an elevationalview oi the device shown applied to a four cylinder two unit engine. Fig. 2 is an enlarged elevational view of the carbureter end of the device shown in position the valve casing and. intake manifold being shown in vertical section. Fig, 3 is a perspective view of the cupped carbureter end of the primer. F ig. 4 is an enlarged vertical sectional view of the fuel supply cock and air control.

like numerals of reference indicate corresponding parts in each figure.

' Referring to the drawings, 1 is the valv chamber of an internal combustion engine having the usual intake opening 2 and manifold 3 which connects the valve chambers with the ordinary carburetor.

4 are nipples inserted into the threaded holes 5 preferably arranged in the elbow of the manifold 3 slightly above the horizontal center and set at a slight incline.

6 are small tubes of copper or othersuitable material extending through the nipples 4 and projecting inwardly into the valve chamber preferably with .a downward incline. The inner ends of the tubes 6 which extend close to the under side of the inlet valves opening into the engine cylinder are formed with cup shaped receptacles 7 pref-' erably held in a horizontal position. The outer ends of the tubes 6 extend beyond the nipples i and are set at an upward incline and the tubes leading from the engine units are brought together and united in an angle connection 8.

9 is the main feed tube connected to the upper portion of the connection 8 and leading to a fuel supply member 10 which is here shown in the form of a small angle cock having a cup shaped upper portion 11.

The upper edge of the cup 11 is preferably formed with a plurality of notches 12 therea in which extend below the cap cap is pivotally' secured to said cup and provided with a suitable spring 141:0 hold it while in an open or closed position.

The valve 15 of the cook 10 is formed with a three-way passage, the main passage 16 entering at right angles to the discharge and being of substantially the same diameter as the passage in the valve body.

17 is as'mall hole extending into the valve and communicating with the main passage 16 and so arranged. that on a quarter turn of the valve, the supply to the feed pipe 9 giil be reduced to the diameter of the small In the use of this device, it is merely necessaryto bore and tap the small hole'5 in the manifold elbows opposite the intake port-sand the tubes 6 upon which the nipples 4 are arranged are then inserted through these holes and the nipples screwed into place. The passage around the tubes through the nipple may be packed in any suitable manner. The main feed tube extends to any suitable portion of the vehicle in which the engine is installed and the supply cup arranged in a suitable location.

In order to prime the engine a small quantity of priming spirit is poured intothe 13 which Y cupped end and flowing through the valve downthe tube 6 lies in the cup receptacles and on the opening of the intake'valves of the engine, the suction created in the'engine draws a supply of air through the tubes 6 and 9 in addition to drawing air through the manifold. The air drawn in through. the hole 17 in the valve 15 flows through the tubes 6 and is required to pass through the gasolene or other priming spirit lying in the cup receptacles, being thus thoroughly carbureted and the rich carbureted air thus produced immediately adjacent to the valves is drawn through the valve openings and forms an explosive mixture within the cylinder sufficient to cause the starting of the engine. Immediately following the starting of the engine the operator turns the valve 15 so as to open the larger opening and turn the small hole 17 out of alinement with the tube 9. A quantity of air is thus drawn inthrough the valve and is directed up- Wardly toward the engine valves by the upturned edges of'the cups 7 being thus directed through the valve openings Without ."unduly. influencing the quality of the explosive mixture draun through the manis told 3 but a material addition made to .the volume of air drawn in through the manifold, thus increasing the volume Without materially ailccting the explosive qual. ity of the gas. This effects a very considerable saving in fuel as an engine may be throttled down closer for a given speed and the auxiliary aira regulated as desired by operating the valve 15. It is found by actual tests that without changing any of the adjustments in regard to the carbureter or spark on an engine that the speed of a motor car can be increased to in the neighborhood 1 of four or live miles an hour on an ordinary running speed. by the use of this auxiliary air inlet which is av necessary adjunct to the feature ofpriming, as the air is takendirectly through the priming spirit.

lVhat we claim as our invention is:'

1. A primer for internal combustion engine comprising a conduit extending into the inlet chamber adjacent to the valve and having an open receptacle secured at the inner end, said receptacle having an open area greater than the cross sectional area of the conduit and means for allowing an inflow of air through said receptacle to effeet the carburation of the priming fluid.

2. A primer for internal combustion engines, comprising a conduit open. to the outer atmosphere and extending into the inlet chamber and having an open cupped receptacle supportedat its inner end, said conduit being of lesser cross sectional area than the open area of the receptacle, and a receptacle at the outer end of said conduit adapted to contain a charge of priming spirit.

3. A primer for internal combustion engines, comprising a conduit open to the outer atmosphere and extending into the inlet chamber and having an open cupped rece atacle supported at its inner end, said conduit being of lesser cross sectional area than the open area of the receptacle, a receptacle at the outer end of said conduit adapted to contain a charge of priming spirit, and a valve arranged in said conduit for controlling the flow of air therethrough.

A primer for internal combustion englues, comprising, a conduit open to the outer atmosphere and extending into the inlet chamber and having an open cupped receptacle supported at its inner end, said conduit being of lesser cross sectional area than the open area of the receptacle, and a three-way 'alve arranged in said conduit having a large opening to allow the free lllilOW of the priming spirit or air and a smaller opening adapted on the turning of the valve to restrict the flow of air.

5. A primer for internal combustion engines, comprising, a conduit opening to the atmosphere at the outer end and extending into the inlet chamber having its inner end shaped into an elongated cupped receptacle presenting an open area greater than the area of the conduit and adapted to temporarily retain a charge of priming spirit, and means arranged at the outer end of said conduit for directing the priming spirit the'reinto.

6. A primer for internal combustion cngines, comprising, a conduit leading to the engine valve chamber and having a cup shaped inner end, and a receptacle at the. outer end of said conduit having a 3 Way valve therein, said valve having a full sized openin and a reduced passage to control the flow of air therethrough.

Signed at the city of Toronto, county of York, Ontario, Canada, this 8th day of December 1913. I

' JOHN BOl/VMAN.

BENJAMIN BOWMAN.

Witnesses E. HnnoN, A. G. KELLY. 

